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On This Day: Alexander Graham Bell Granted Patent for Telephone

March 07, 2011 06:00 AM

by
findingDulcinea Staff

On March 7, 1876, Alexander Graham Bell received a patent for the telephone; three days later, he and associate Thomas Watson successfully tested their invention. Elisha Gray, Antonio Meucci and Thomas Edison all claimed to have invented the telephone first, and the issue is still a source of controversy.

Scotland native Alexander Graham Bell had always been interested in sound and speech. His grandfather studied elocution and speech impediments and his father developed the first phonetic alphabet. His mother was nearly deaf, but Bell communicated with her by speaking in a low voice close to her forehead, believing that “his mother would be able to ‘hear’ him through the vibrations his vocal intonations would make,” says PBS.

Young Alexander experimented with sound even as a boy, obtaining a human inner ear from a medical school to observe how sound waves vibrated the bones. He continued his experiments with sound waves after immigrating to North America, moving between Ontario and Boston.

Bell worked on creating a multiple telegraph, which could send multiple telegraph messages simultaneously. Bell surmised that this could be accomplished by sending messages of different pitch, which led to his invention of the “harmonic telegraph.” Bell theorized that the same principles he used to develop the harmonic telegraph could be used to create a device that transmitted voices.

Working with electrician Thomas Watson, Bell created an early model of a telephone in June 1875. Bell and Watson continued to perfect their model; on Feb. 14, 1876, knowing that Oberlin College teacher Elisha Gray was close to finishing a similar device, Bell filed for a patent just hours before Gray filed a patent caveat, a preliminary step to reserve the right for a patent.

On March 10, he was granted patent 174,465 for “The method of, and apparatus for, transmitting vocal or other sounds telegraphically, as herein described, by causing electrical undulations, similar in form to the vibrations of the air accompanying the said vocal or other sounds, substantially as set forth.”

Bell presented his invention that June at the Centennial Exhibition in Philadelphia and wowed the crowd. After Western Union declined to buy the patent for $100,000, Bell started the Bell Telephone Company, which brought telephone technology to the masses and made the Bell name synonymous with the telephone.

Several years later, writes Julie M. Fenster in American Heritage, the president of Western Union “told colleagues that if he could get the patent for $25 million he’d consider it a bargain. By then it wasn’t for sale.”

There are several controversies about the invention. First is that Bell received a patent before he had a working device, which was unusual. His critics, including Elisha Gray and Thomas Edison—who claimed to have had a working telephone but did not file for a patent—accused Bell’s father-in-law, former Congressman Gardiner G. Hubbard, of persuading the patent office to give Bell his patent over Gray.

Edward Evenson, author of “The Telephone Patent Conspiracy of 1876,” also believes that Bell saw Gray’s caveat. But University of Virginia professor Bernard Carlson disputes this notion, telling The Washington Post, “Bell doesn't simply take what he saw or didn't see in Gray's caveat. They are two similar devices but two very different principles. They look alike but they don't work alike.”

Some people believe that the telephone predates the work of Bell, Gray and Edison. Antonio Meucci, an Italian immigrant, developed the design of a “talking telegraph” in 1849. He filed for a patent caveat in 1871, but due to financial difficulties he was unable to renew it three years later. He, too, later sued Bell, but died before the Supreme Court could hear his case.

In 2002, Italian-American Congressman Vito Fossella persuaded the House of Representatives to recognize Meucci as the true inventor of the telephone. “If Meucci had been able to pay the $10 fee to maintain the caveat after 1874, no patent could have been issued to Bell,” said the House resolution.

Bell’s heirs donated his papers to the Library of Congress in 1975. The collection, totaling about 130,000 items, 4,695 of which are online, covers Bell’s entire career in detail, including his work on the telephone and his interest in aeronautics.